:root {
  ::-webkit-scrollbar {
    width: 6px;
    height: 8px;
  }
  ::-webkit-scrollbar-track {
    // background-color: #f9f9f9;
  }
  ::-webkit-scrollbar-thumb {
    background: #999;
    background-clip: padding-box;
    border-radius: 4px;
  }
}

html,
body,
header,
main,
nav,
section,
div,
h1,
h2,
h3,
h4,
h5,
h6,
tr,
td,
p,
ul,
li {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}
div,
input,
select {
  outline: none; /*cancel blue border*/
}
ul,
ul li {
  list-style: none;
}

// 自定义文本选择
::selection {
  background: var(--primary-color);
  color: #fff;
}

// 禁用选择
.unselectable {
  user-select: none;
}